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发明名称
Mit Tragorganen versehener, aus Zement hergestellter Formkörper zur Erstellung von Schächten, Kläranlagen und dergleichen.
摘要
申请公布号
CH292336(A)
申请公布日期
1953.08.15
申请号
CHD292336
申请日期
1951.07.28
申请人
J. FREY & CIE.
发明人
CIE. J. FREY &
分类号
E02D29/12;F16L9/08;F16L13/11
主分类号
E02D29/12
代理机构
代理人
主权项
地址
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